wicket.model
Class LoadableDetachableModel

java.lang.Object
  wicket.model.AbstractDetachableModel
      wicket.model.LoadableDetachableModel

All Implemented Interfaces:

IDetachable, IModel, java.io.Serializable

public abstract class LoadableDetachableModel

extends AbstractDetachableModel

Model that makes working with detachable models a breeze. LoadableDetachableModel holds a temporary, transient model object, that is set on 'onAttach' by calling abstract method 'load', and that will be reset/ set to null on 'onDetach'. A usage example:

 LoadableDetachableModel venueListModel = new LoadableDetachableModel()
 {
   protected Object load()
   {
      return getVenueDao().findVenues();
   }	
 };
 

Author:

Eelco Hillenius

See Also:

Serialized Form

Constructor Summary

LoadableDetachableModel()
Construct.

Method Summary

IModel	getNestedModel() Gets the nested model.
protected abstract java.lang.Object	load() Loads and returns the (temporary) model object.
protected void	onAttach() Attaches to the current request.
protected void	onDetach() Detaches from the current request.
protected java.lang.Object	onGetObject(Component component) Called when getObject is called in order to retrieve the detachable object.
protected void	onSetObject(Component component, java.lang.Object object) Called when setObject is called in order to change the detachable object.
protected void	setObject(java.lang.Object object) Sets the object.

Methods inherited from class wicket.model.AbstractDetachableModel

attach, detach, getObject, isAttached, setObject

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LoadableDetachableModel

public LoadableDetachableModel()

Construct.

Method Detail

onAttach

protected final void onAttach()

Description copied from class: AbstractDetachableModel

Attaches to the current request. Implement this method with custom behaviour, such as loading the model object.

Specified by:

onAttach in class AbstractDetachableModel

See Also:

AbstractDetachableModel.onAttach()

load

protected abstract java.lang.Object load()

Loads and returns the (temporary) model object.

Returns:

the (temporary) model object

onDetach

protected final void onDetach()

Description copied from class: AbstractDetachableModel

Detaches from the current request. Implement this method with custom behaviour, such as setting the model object to null.

Specified by:

onDetach in class AbstractDetachableModel

See Also:

AbstractDetachableModel.onDetach()

onGetObject

protected final java.lang.Object onGetObject(Component component)

Description copied from class: AbstractDetachableModel

Called when getObject is called in order to retrieve the detachable object. Before this method is called, getObject() always calls attach() to ensure that the object is attached.

Specified by:

onGetObject in class AbstractDetachableModel

Parameters:

component - The component asking for the object

Returns:

The object

See Also:

AbstractDetachableModel.onGetObject(wicket.Component)

setObject

protected final void setObject(java.lang.Object object)

Sets the object.

Parameters:

object - the object

onSetObject

protected final void onSetObject(Component component,
                                 java.lang.Object object)

Description copied from class: AbstractDetachableModel

Called when setObject is called in order to change the detachable object. Before this method is called, setObject() always calls attach() to ensure that the object is attached.

Specified by:

onSetObject in class AbstractDetachableModel

Parameters:

component - The component asking for replacement of the model object

object - The new model object

See Also:

AbstractDetachableModel.onSetObject(wicket.Component, java.lang.Object)

getNestedModel

public final IModel getNestedModel()

Description copied from interface: IModel

Gets the nested model.

Specified by:

getNestedModel in interface IModel

Specified by:

getNestedModel in class AbstractDetachableModel

See Also:

IModel.getNestedModel()